: Combining these channels unlocks downstream raw capacities between 5 Gbps and 10 Gbps depending on provider configuration. Key Technical Specifications Broadcom BCM3390 (Predecessor) Broadcom BCM3392 (Current Generation) DOCSIS Standard DOCSIS 3.1 DOCSIS 3.1 Extended / 3.1+ OFDM Channels 2 Channels 4 Channels SC-QAM Channels 32 Downstream 32 Downstream Max Downstream Speed ~1–2 Gbps Up to 10 Gbps Target Hardware Modems, Gateways, STBs Next-gen CPE, 10G Gateways Strategic Importance for Cable Operators 1. Capital Expenditure (CapEx) Efficiency
While Broadcom has historically dominated the cable modem chip market, the BCM3392 is part of a competitive landscape aiming to maximize the life of existing HFC networks. broadcom 3392
Broadcom's cutting-edge unified DOCSIS 4.0 chips are heavily guarded under a restrictive and costly Joint Development Agreement (JDA). This agreement grants exclusive or early access only to a handful of tier-1 global operators, such as Comcast, Charter Communications, Rogers Communications, and Liberty Global. : Combining these channels unlocks downstream raw capacities
The BCM3392 is strategically positioned to "buy time" for operators. It allows them to offer competitive multi-gigabit services using their current CMTS (Cable Modem Termination System) Broadcom's cutting-edge unified DOCSIS 4
| Chipset | CPU Cores | Hardware NAT | USB Speed | OpenVPN | Verdict | | :--- | :--- | :--- | :--- | :--- | :--- | | | Dual A9 (1.6Ghz) | Yes (Runner) | 60 MB/s | Poor | Stable & Fast routing | | Qualcomm IPQ8064 | Dual Krait (1.4Ghz) | Yes | 100 MB/s | Fair | Better for VPN | | Mediatek MT7621 | Dual MIPS (880Mhz) | Yes | 40 MB/s | Very Poor | Budget option | | Intel Puma 7 | Quad A7 (1.2Ghz) | Yes | 80 MB/s | Poor | Avoid due to lag |
For many cable operators, this chipset represents a "stretch" strategy—extending the lifespan of current infrastructure while meeting the growing consumer demand for ultra-high-speed internet and Wi-Fi 7 integration.